Product Introduction
UK Clairair Low Power Infrared Gas Sensor 0-5000ppm CH4Prime RP Description:
The Prime RP sensor uses non-dispersive infrared method to detect the presence of hydrocarbon gases. The sensor contains an infrared radiation source, a dual-element custom infrared detector, a unique optical waveguide that allows gas to diffuse in, and microprocessor-based internal electronics that provide a voltage output independent of power supply polarity. These sensors can be configured to provide a Pellistor format output, typically at a medium voltage level at zero, with voltage output increasing by 100mV as the detector pin moves, within a range; or provide a linear voltage output, typically varying from 0.4V to 2.0V on the negative power pin. Additionally, the output can be read and internal configuration can be accessed via a serial communication link. The contact points for the communication link are pads in the 3-pin version of the Prime RP. The internal electronics perform all functions of driving the sensor optics, extracting detector signals, converting signals to concentration, applying temperature compensation, and scaling the output. The Prime RP is not currently explosion-proof certified, so it should be placed in a suitable explosion-proof enclosure when used in hazardous areas. Technical support and application notes for implementation can be obtained fromTechnicalConsultation.
UK Clairair Low Power Infrared Gas Sensor 0-5000ppm CH4 Prime RP Features:
Operates independent of power supply polarity
Pellistor analog bridge output, or0.4-2.0V linear voltage output
In gas, when usingPellistorthe voltage at the detector connection increases
Operating voltage range: 3.0V to 5.0V
Operating current:15mA average typical
Detection range:0-100% LEL Methane, 0-100% LEL Hydrocarbons or 0-100% Volume Methane
All-metal structure with separate housing
Small internal volume
Flexible access to electronic configuration
Wide operating temperature range
Fast response
Immune to 'poisoning'
UK Clairair Low Power Infrared Gas Sensor 0-5000ppm CH4Prime RP Product Overview Details:
All dimensions are in millimeters (unless otherwise specified, tolerance ±0.1mm). Rx and Tx are pins in the 3-pin format.
UK Clairair Low Power Infrared Gas Sensor 0-5000ppm CH4Prime RP Parameters:
Unless otherwise stated all data was taken using: Supply voltage of 3.5V. Ambient temperature (between 20°C and 25°C). Ambient pressure (between 995 hPa and 1020 hPa). Gases diluted in nitrogen. Gas Flowrate 1litre/min across sensor face.
| Supply voltage range |
3.0V – 5.0V |
| Power |
45mW typical at 3.0V supply |
| Default output range |
|
| Photoresistor mode |
0 – 100mV from mid supply relative to detector pin |
| Resistance mode |
0.4V – 2.0V |
| Warm-up time |
< 60s |
| For operation According to specifications |
< 3 minutes |
| Normal range |
0 – 100% LEL methane, 0 – 100% LEL hydrocarbons or 0 – 100% Volume methane |
| Response time (T90） |
< 30s to a step change in gas concentration |
| Resolution |
|
| At zero |
< 0.5% of range |
| In range |
<2% of range |
| Zero repeatability |
± 1% of range |
| Accuracy |
± 3% of range up to 50% of range ± 5% of range above 50% of range |
| MTBF |
> 5 years |
| Digital interface format |
8 data bits, 1 stop bit, no parity |
| Digital interface baud rate |
38400 (default), 19200, 9600 |
| Digital interface logic level |
VINL Input low voltage: <0.8V VINH Input high voltage: >2.0V VOL Output low voltage: <0.4V VOH Output high voltage: >2.4V |
| Weight |
18.0 grams |
| Vibration |
Complies with EN61779-1 |
| Relative humidity |
0 – 95% RH non-condensing |
| Operating temperature range |
-30°C to +50°C |
| Storage temperature range |
-40°C to +80°C |
| Operating pressure range |
700 – 1300 hPa |
